Pressure relief valve
 

"Chuck" wrote in message
...
What is the purpose of the pressure relief valve that is installed in the
water line coming into my house. It is on my side of the water meter.
There is some sort of an adjustment on the end of it and an opening for
water to escape on the bottom of the device.
Does it actually control the pressure coming into the house? If so, how
can I adjust it to cut the pressure down in my house. I have called the
water department and they have assured me that it is my problem because
"our pressure is always correct".
Water does come out of the relief valve from time to time and gets things
wet in the area it is in. The "plumber" at Home Depot said to put a plug
in the hole to stop the water from coming out.
I have noticed that the pressure is higher in the mid afternoon. Probably
cause no one is home in the neighborhood.
I don't know what the actual pressure is because I don't have a meter in
line.
Anybody have any ideas? Chuck B.


First you should realize the plumber at home depot is an idiot. The device
is just a pressure regulator. The city pressure is most likely is to high it
might fluctuate at times. It could also be caused by thermal expansion hot
water will expand can cause the pressure to raise . The water is just
pressure being released the adjustment nut dose regulate the pressure best
bet is to leave it alone. you could check the pressure at a hose bib a
plumbing supply could set you up. I would not be to concerned unless it's
blowing off a lot of water the PRV might need to be replaced .

Pressure relief valve
 

On Feb 6, 9:13*pm, "Sac Dave" wrote:

First you should realize the plumber at home depot is an idiot. The device
is just a pressure regulator. The city pressure is most likely is to high it
might fluctuate at times. It could also be caused by thermal expansion hot
water will expand can cause the pressure to raise . The water is just
pressure being released the *adjustment nut dose regulate the pressure best
bet is to leave it alone. you could check the pressure at a hose bib a
plumbing supply could set you up. I would not be to concerned unless it's
blowing off a lot of water the PRV might need to be replaced .

I was under the impression that pressure reducing valves for domestic
water supplies do not dump water overboard. The Watts units I have
installed reduce water pressure to the house but dont dump any water.

Pressure relief valves do dump at times. PRV can be instead of
expansion tanks (depending how your local folks prefer it done) or
they can be vestigial PRV's from when TP valves did not come standard
on water heaters.

Per Sac Dave's comment I would suggest that the OP not simply plug the
output.